Cylinder-block



Patented Nov. 2, 192%.

WALTER OWEN BENTLEY, OF LONDON, ENGLAND.

CYLINDER-BLOCK.

Specification of Letters Patent.

Patented Nov. 2, 1920.

Application filed May 17, 1920. Serial No. 382,199.

T 0 all whom it may concern:

Be it known that I, lVALTER OWEN BENT- LE1, a sub'ect of the King ofEngland, re-

siding at ondon, England, have invented certain new and usefulImprovements in from which sand and flash can easily be removed.

According to this invention, the cylinders are joined together at thefeet, at the bottom of the water jacket and at the top, the sides andends being open from the bottom of the water jacket up to a convenientheight, and a skeleton frame being cast integral with the block to whichplates forming the end and side walls of the jacket are attached. Theseframe parts are at'the corners of the block so that flat plates aloneare required.

In the accompanying drawings,

Figure 1 is a perspective ViBW Of iTlTlOCk containing four cylinders inaccordance with this invention, from which the cover plates have beenremoved.

Fig. 2 is an end view of the same.

Like letters indicate like parts in both views.

The four cylinder barrels A are joined together at their feet by the WebB, Wlll'Ch constitutes the flange by which the block is bolted down onto the crankcase. They are,

also joined together bya Web C which forms the bottom of the waterjacket and again at the top, as shown. The ends are open at D and thesides at I), these openings being surrounded by a skeleton frame F atthe edges and corners to which cover plates (not shown) are attached.It'will be clear that flat cover plates only are necessary and thatthese are simple to produce.

Preferably the valves are arranged in the cylinder heads, there beingfour for each cylinder, and 'the top (1 ofthe block is cast flat toreceive the camshaft and rockermechanism (not shown) and apertures Harate barrel portions, a web for core plugs may be provided in the topface between each set of four valve guide holes J.

It will be seen that the openings E, extend up to the bosses forcontaining the sparking plugs at K. At the ends of the block theseopenings may extend up to the top of the block, as shown in Fig. 2. Thusthe interior is easily accessible for cleaning and the support of thecores during casting is an easy matter.

When the inlet valves are all arranged on one side of the block, withthe exhaust valves on the other side, the upper part of the side of theblock on which the inlet valves are located may be open at L for thetached by screws to the frame parts F at the corners of the block and tothe Web 0 and to a suitable face 0 at the top.

What I claim as my invention and desire to secure by Letters Patent ofthe United States is w 1. A cast metal cylinder block having sepjoiningtogether the lower ends of said barrels, a second web connecting thebarrels and forming the bottom of the Water jacket, a jacketed head,frame portions at the corners, and faces on said second web, said headand said frame portions for the attachment of cover plates,substantially as setforth.

2'. A cast metal cylinder block as claimed in'claim 1 having a longrecess in said cylinder head, and inlet valve ports located in saidhead, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WALTER OWEN BENTLEY. lVitnes'ses:

R. J. Etrsiaon,

T. W. Learn.

the block is of cast iron and

